Tom Phillips reports that a drought in Brazil has provided evidence of an ancient civilisation in the form of engravings up to 7,000 years old, in the Guardian:
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A series of ancient underwater etchings has been uncovered near the jungle city of Manaus, following a drought in the Brazilian Amazon.
The previously submerged images – engraved on rocks and possibly up to 7,000 years old – were reportedly discovered by a fisherman after the Rio Negro, a tributary of the Amazon river, fell to its lowest level in more than 100 years last month.
Tens of thousands of forest dwellers were left stranded after rivers in the region faded into desert-like sandbanks.
Though water levels are now rising again, partly covering the apparently stone age etchings, local researchers photographed them before they began to disappear under the river’s dark waters.